NSK Ltd. has a basic policy not to export any …

1 AM7 BDISTRIBUTED BY[ ]NSK Ltd. has a basic policy not to export any products or technology designated as controlled items by export -related laws. When exporting the products in this brochure, the laws of theexporting country must be observed. Specifications are subject to change without notice and without any obligation on the part of the manufacturer. Every care has been taken to ensurethe accuracy of the data contained in this brochure, but no liability can be accepted for any loss or damage suffered through errors or omissions. We will gratefully acknowledge any additionsor , Tokyo, & Europe Departmenttel: 03-3779-7120 Asia Marketing & Sales Departmenttel: 03-3779-7121 AfricaSouth Africa:NSK South Africa (Pty) : (011)458 3600 Asia and Australia Pty.

2 : (03)9764-8302 China:NSK Hong Kong Kongtel: 2739-9933 Kunshan NSK Co., : 0520-7305654 Guizhou HS NSK Bearings Co., : 0853-3521505 NSK (Shanghai)Trading Co., : 021-62099051 NSK representative officeBeijingtel: 010-6590-8161 NSK representative officeShanghaitel: 21-6209-9051 NSK representative officeGuangzhoutel: 020-8732-0583 NSK representative officeAnshuntel: 0853-3522522 India:Rane NASTECH : 04114-65313, 65314, 65365, 66002 NSK representative officeChennaitel: 044-4334732 NSK Bearings Manufacturing IndonesiaJakartatel: 021-898-0155 Korea Co., : 02-3287-0300 NSK Korea Co., Ltd., Changwon PlantChangwontel: 0551-287-6001 Malaysia:NSK Bearings (Malaysia)Sdn. Lumpurtel: 03-7958-4396 NSK Micro Precision (M)Sdn. Lumpurtel: 03-961-6288 New New Zealand : (09)276-4992 Philippines:NSK representative officeManilatel: 02-759-6246 Singapore:NSK International (Singapore)Pte : (65)273 0357 NSK Singapore (Pte) : (65)278 1711 Taiwan:Taiwan NSK Precision Co.

3 , : 02-2591-0656 Thailand:NSK Bearings (Thailand)Co., : 02-6412150~58 Chonburitel: (038)214-317-8 SNNS Co., : (038)522-343~350 EuropeNSK Europe Ltd. (European Headquarters) , Englandtel: 0162-850-9800 France:NSK France : 01 30 57 39 39 Germany:NSK Deutschland GmbhD sseldorftel: 02102-481-0 NSK Steering Systems Europe : 0771-79082-277 Neuweg Fertigung GmbhMunderkingentel: 0 7 3 9 3 - 5 4 0 Italy:NSK Italia : 02-995-191 Poland:NSK Europe Ltd. Warsaw Liaison OfficeWarsawtel: 48-22-645-1525, 1526 NSK Iskra : 48-41-366-6111 Spain:NSK Spain : 93-575-4041 Worldwide Sales OfficesTurkey:NSK Bearings Middle East Trading Co., : 90-216-442-7106 United Kingdom:NSK Bearings Europe , Englandtel: 0191-586-6111 NSK European technology Center., , Englandtel: 0163-660-5123 NSK UK , Englandtel: 0163-660-5123 NSK Steering Systems Europe , Englandtel: 024-76-588588 North and South AmericaNSK Americas, Inc.

4 (American Headquarters)Ann Arbor, Michigan, : 734-913-7500 Argentina:NSK Argentina SRLB uenos Airestel: 011-4762-6556 Brasil o Paulotel: 011-3269-4700 Canada : 905-890-0740 Mexico:NSK Rodamientos Mexicana, de Citytel: 5 - 3 0 1 - 2 7 4 1 United States of CorporationAnn Arbor, Michigantel: 734-913-7500 Sales Offices:Ann Arbor, Michigantel: 734-913-7500 Cerritos, Californiatel: 562-926-2975 NSK American Technical CenterAnn Arbor, Michigantel: 734-913-7500 NSK Precision America, , Illinoistel: 630-620-8500 NSS AmericaBennington, Vermonttel: 802-442-5448 NSK Latin America , Floridatel: (305)477-0605 NSK CorporationSales Arbor4200 Goss RoadAnn Arbor, MI 48105800-675-9930 Cerritos13921 Bettencourt StreetCerritos, CA Replacement Guide AM7B Printed in USA NSK 2005.

5 The contents of this publication are the copyright of the publishers. CylindricalRoller BearingsIntroductionBallBearingsSpherica lRoller BearingsTaperedRoller BearingsThrustBearingsSplitPillowBlocksS uper PrecisionBearingsRolling MillBearingsLinearMotionEngineeringSecti on1 Product Service Guide INTRODUCTIONHow to Order Replacement Bearings ..2 Things You Should Know About NSK ..3 Other Product Capabilities ..5 BALL BEARINGST able of Contents ..6 Introduction ..7 Nomenclature & Interchange ..8 Application Information ..11 Bearing Tables ..12 CYLINDRICAL ROLLER BEARINGST able of Contents ..48 Introduction ..49 Nomenclature & Interchange ..50 Application Information ..51 Bearing Tables ..52 SPHERICAL ROLLER BEARINGST able of Contents ..64 Introduction ..65 Nomenclature & Interchange.

6 66 Application Information ..69 Bearing Tables ..70 TAPERED ROLLER BEARINGST able of Contents ..100 Introduction ..100 Nomenclature & Interchange ..102 Application Information ..103 Bearing Tables ..104 THRUST BEARINGST able of Contents ..138 Introduction ..138 Nomenclature & Interchange ..139 Application Information ..141 Bearing Tables ..142 SPLIT PILLOW BLOCKST able of Contents ..154 Introduction ..155 Nomenclature & Interchange ..156 Application Information ..157 Bearing Tables ..158 SUPER PRECISION BEARINGST able of Contents ..182 Introduction ..183 Nomenclature & Interchange ..184 Application Information ..189 Bearing Tables ..190 LINEARMOTIONT able of Contents ..228 Introduction ..229 Nomenclature & Interchange ..231 Application Information.

7 233 Bearing Tables ..234 ROLLING MILL BEARINGST able of Contents ..282 Introduction ..283 Nomenclature ..284 Description and Features ..286 Application Drawings ..286 ENGINEERING SECTIONT able of Contents ..298 Appendices ..356 Part Number Index ..360 Conversion Factors ..366 Copyright 2003, NSK Corporation, All Rights ReservedCylindricalRoller BearingsIntroductionBallBearingsSpherica lRoller BearingsTaperedRoller BearingsThrustBearingsSplitPillowBlocksS uper PrecisionBearingsRolling MillBearingsLinearMotionEngineeringSecti on2 How to Order Replacement BearingsOrdering the correct replacement bearing is a critical task but one that is not difficult if you take time to gatherthe right information. Just follow these steps:nFirst IDENTIFY the type of bearing you need to replace.

8 Ball Bearing Single Row, Double Row, Angular Contact Roller Bearing Cylindrical, Spherical, Tapered Thrust Bearing Ball or Roller Split Pillow Block Pillow Blocks Super Precision Angular Contact Ball, Cylindrical Roller, Ball Screw Support Linear Motion Linear Guides, Ball Screws, Mono CarriersnSecond LOCATE the identification number on the identification numbers are usually located on the inner ring face, outer ring face or bearing Mounted units are identified by a number tag fastened to the unit or by a housing number cast into the housing MEASURE if you need to. If a bearing identification number is not legible, you will need to determine the following:1. Inner ring bore (inside diameter)2. Outer ring outside diameter3. Inner width and outer width (these may be different)4.

9 Shape of the bore and/or outside diameter of bearing spherical, tapered or cylindricalnFourth RECORD additional relevant information. The more information available, the easier it will be to identify the replacement bearing needed. Record:1. Unique features such as lubrication holes, snap ring grooves, machined shoulders, Application/equipment datanFifth LOOK in the appropriate section of the Ball Bearings2. Cylindrical Roller Bearings3. Spherical Roller Bearings4. Tapered Roller Bearings6. Split Pillow Precision Bearings8. Linear Mill Bearings10. Engineering information, for all bearing types, is in section you are still unable to identify the bearing you need, call your NSK Distribution Center. CylindricalRoller BearingsIntroductionBallBearingsSpherica lRoller BearingsTaperedRoller BearingsThrustBearingsSplitPillowBlocksS uper PrecisionBearingsRolling MillBearingsLinearMotionEngineeringSecti on3 Things You Should Know About is a world-class producer of ball and roller bearings.

10 Established in 1916, NSK became one of the leaders in thebearing industry because of an intense commitment to engineering research, dedication to modern manufacturingprocesses and an obsession for worldwide network of modern manufacturing facilities and distribution centers is linked by an elaboratecomputer network that gives us the ability to provide fast service and delivery to our innovative engineering methods give us the flexibility to keep pace with the ever-changing technical needs of ourcustomers. As a result, we produce bearings designed to operate at higher speeds, with greater precision and has more than 85 years experience in the design, development and manufacture of nearly every kind of anti-friction bearing. This experience combined with up-to-date research methods and close attention to quality controlhave made NSK a world-class supplier of bearings to all the major have prepared this catalog to provide you with an accurate, easy-to-use tool for selecting or replacing catalog contains dimensions, tolerances and load ratings for commonly used bearings.